Between 222 million years ago and present, because birds are technically dinosaurs, but traditional dinosaurs died out 65 million years ago.
At the end of the Cretaceous, roughly 65 million years ago.
The geologic time scale.
The scientific time scale is also called the Geologic time scale. It has been created to describe the order of major events on Earth for the last 4.5 billion years.
Geologic Time. It's called the Geologic Time Scale.
Cenozoic is not a major period of the geologic time scale. The scale is broken down into eras. Cenozoic, Mesozoic and Paleozoic are all part of the Phanerozic era.
since dinosaurs
Phanerozoic is the eon which geologic time scale means visable life.
The Precambrian
in the scope of geologic time, how significant is the presence of humans?
Cenozoic
On a geologic time scale, yes. On any other time scale, no.
Eon The largest expanse of time on the geologic time scale is the eon. An eon would encompass at least two eras.